/*
 Copyright 2012 Ronald Pablos 

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 */

package org.bn.metadata.constraints;
import java.util.Arrays;
import org.bn.annotations.constraints.ASN1FromConstraint;
import org.bn.coders.Alphabets;
import org.bn.coders.ConstraintException;

public class ASN1FromConstraintMetadata implements IASN1ConstraintMetadata {
    private int[] alphabet;
    
    public ASN1FromConstraintMetadata(ASN1FromConstraint annotation) {
        this.alphabet = Alphabets.SortedSetAlphabetUnicode(annotation.alphabet());
    }
    
    public int[] getAlphabet() {
        return this.alphabet;
    }
    
    @Override
    public boolean checkValue(Object value) throws ConstraintException {
        if (value instanceof int[])
        {
            int[] unicodeStr = (int[]) value;
            for (int ch: unicodeStr) {
                int pos = Arrays.binarySearch(alphabet, ch);
                if (pos <0)
                    return false;
            }
            return true;
        }
        return false; 
        
    }

    @Override
    public boolean checkLength(long len) throws ConstraintException {
        return true;
    }
    
}
